We had a word limit.
But the power of a coherent, empirically strong framework is that it's easier to make the case even in a short paper especially since one can dispense of the epicycles taking up useless space and just point out how it all fits together, the epi, labs, etc.
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Second: I keep seeing claims that if it's aerosols, that means cloth or surgical masks are useless, and also what's called "droplet precautions" are useless. The aerosol experts have written so many papers on why that's not the case, and, in any case, that's not what we observe.
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The paper, while word-limited, does go into both of these topics, but as with any shift like this, I agree the implications deserves more attention/explanation, and hopefully more soon, partly because part of the problem were some flawed assumptions in multiple directions.
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And, this doesn't bind my co-authors, but I think our evidence-base is stronger for discriminating between droplets vs. aerosols, but not as much for fomites especially through resuspension etc. No, not washing groceries but.. I'd wipe down high-touch surfaces in crowded indoors.
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We briefly address this (word limit!
) but it's not correct to assume that airborne transmission necessitates either a high R0 like measles or even a uniform transmission pattern. Tuberculosis is airborne but has lowish R0—but likely also overdispersion!https://twitter.com/bobby_dread/status/1383787373134184450 …
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Another good addition for people following this topic is Dr.
@linseymarr, a true pioneer in this field (her latest in@bmj_latest, also out this week(!), was titled "Covid-19 has redefined airborne transmission").https://twitter.com/linseymarr/status/1382842521286549508 …Show this thread -
And just putting this thread here so people can get some context of how difficult it has been, for so long, to make progress.https://twitter.com/linseymarr/status/1383066390136041477 …
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Feels like an inflection point. Do read what the article linked by Dr. Karan argues: that short-range (close contact) transmission of respiratory infections is also PRIMARILY aerosols—goes against decades of claims of aerosols only/mostly being long-range. https://twitter.com/AbraarKaran/status/1384240928873844742 …pic.twitter.com/xvf2bQeES8
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